Synonyms:FLJ32198, P35, UP3b, UPIIIb, UPK3B, uroplakin 3B, Uroplakin IIIb Background:Component of the asymmetric unit membrane(AUM), a highly specialized biomembrane elaborated by terminally differentiated urothelial cells. May play an important role in AUM-cytoskeleton interaction in terminally differentiated urothelial cells. It also contributes to the formation of urothelial glycocalyx which may play an important role in preventing bacterial adherence(By similarity).